| From: | Stephan Szabo <sszabo(at)megazone23(dot)bigpanda(dot)com> |
|---|---|
| To: | Martín Marqués <martin(at)bugs(dot)unl(dot)edu(dot)ar> |
| Cc: | pgsql-sql(at)postgresql(dot)org, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: delete with cascade |
| Date: | 2001-05-04 22:06:24 |
| Message-ID: | Pine.BSF.4.21.0105041505370.61624-100000@megazone23.bigpanda.com |
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| Thread: | |
| Lists: | pgsql-general pgsql-sql |
On Wed, 2 May 2001, [iso-8859-1] Martn Marqus wrote:
> I was reading the manuals on DELETE and I saw this:
>
> By default DELETE will delete tuples in the table specified and all its
> sub-tables. If you wish to only update the specific table mentioned, you
> should use the ONLY clause.
Any table that inherit from this table.
> I just don't understand what sub-tables means. Does it mean that it will
> delete rows on other tables which are referenced with a FOREIGN KEY to the
> row which will be deleted?
Only if you defined the foreign key with ON DELETE CASCADE.
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